Drawing a Single Line Diagram for Energy Company Connection Approval

Question

Hello colleagues, I am asking for help in drawing a single-line diagram, as required by the energy company. Below I present a connection drawing from which a single-line diagram would be drawn.

zdzisiek1979 · Answer

The only thing that comes to my mind buddy from this drawing is something like that.

Arturo2005 · Answer

Rather, without this bypass at the fuse

blumberg · Answer

Without which workarounds ?? at the disconnector ?? can a colleague draw correctly ?? Do you need to put element descriptions? e.g. fuse "S" 20A ??

The sentence starts with a capital letter. Please correct. [retrofood]

Arturo2005 · Answer

Yes, add values.

blumberg · Answer

Ok, thank you ,,, And tell me, colleagues, would you have to draw such a diagram on the application to the energy company ?? Will such a scheme be accepted by the power plant and will not "purr" anything ??? :-)

And I also have a question, should the voltage values be given in V or kV ?? The conditions for connection include the following provisions: the network operates in the following system: a) MV - with the neutral point earthed through a resistor and b) 0.4kV - TN-C ... and further writes: measurement and billing system at 0.23kV, single-phase direct. ... Do we give the values in the single-line diagram in V or kV ???

brief99 · Answer

I always write the voltages they give in conditions, if they gave them in MV, I would write them in MV, as they say in kV, write them in kV, but let smarter colleagues say something.

trebuch1 · Answer

The diagonal line indicates the number of phases, not the number of wires. Crap of the year.

blumberg · Answer

So if there are two diagonal lines, it means that it is badly drawn? I asked to improve the spelling of the previous post. Point 6 of the Regulations. [retrofood]

brief99 · Answer

Nonsense...

zdzisiek1979 · Answer

One dash can be used and a description in the form of a digit corresponding to the number of wires in the cable, additionally the cable type, number of wires and wire cross-section must be indicated.
The diagram itself must additionally have a description of the protection devices, type and value, it must also be the type of network it is and any markings of the network to which the connection is made.

remik_l · Answer

I propose something like this at this point (create the appropriate values):

Drawing a Single Line Diagram for Energy Company Connection Approval

What about the protective or protective neutral conductor?
What kind of network do you have, is it TT?
How far is this connector from the powered building / buildings?

As for the lines, I suggest you read this .

brief99 · Answer

A colleague of Blumberg described a few posts above, incl. what kind of network is this ... TN-C, so we have grounded N ...

remik_l · Answer

Sorry, I didn't read it. So we have PEN on the power supply and now, depending on whether it is close to the building / buildings, we divide it into the ZKP or not.

brief99 · Answer

Ok ... The colleague did not write about the division of PEN into PE and N, but about drawing a single-line diagram to the attached drawing (I presume that the drawing shows the connection of devices that my colleague blumberg made.

trebuch1 · Answer

Thank you for correcting my pointless speech immediately.

zdzisiek1979 · Answer

It looks like an installation in some older building, this junction box somewhere in the corridor maybe there was a renovation or a rental and you need to connect the electricity and conclude a new contract.

blumberg · Answer

I would like to thank my colleagues for the information provided so far. The installation is in garages (20 pieces in a row), boxes are in each garage, so far we had a flat rate for light, but the energy company asked to apply for connection conditions. There is an aluminum cable connection between the garages (4 wires - two black, one brown and one blue). And this is what it looks like.

brief99 · Answer

Well, not quite, my friend Remik_l, you drew a three-phase disconnector, and my colleague blumberg has a single-phase disconnector (at least this is how my colleague blumberg is shown in the drawing) And not N but PEN ... Well, by the way.

remik_l · Answer

Now it should match the data provided by the author.

Drawing a Single Line Diagram for Energy Company Connection Approval

However, I believe that this is not a correct solution to this problem, only a temporary one.

Are these meters to be in garages, and circuit breakers to protect the circuits in them?
If so, you should split the PEN cable and replace the installation in garages with a 3-wire one, because you will not get 10 mm?Cu for lighting / sockets. It would be even better if this aluminum cable was replaced with a 5-wire one.
You should apply an RCD in the socket circuits.

brief99 · Answer

Well, I can see that my friend is trying ... It is best to let the author of the post write what he has in the conditions ,,, RCD in the garage ?? I wonder what my friend will do there ??

Drawing a Single Line Diagram for Energy Company Connection Approval

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